Dell G5 5090 Service Manual - Page 77

Recovering the operating system, Flashing BIOS (USB key), Flashing the BIOS - motherboard

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Table 20. System error messages(continued) System message Keyboard failure No boot device available Description Keyboard failure or loose cable. If reseating the cable does not solve the problem, replace the keyboard. No bootable partition on hard disk drive, the hard disk drive cable is loose, or no bootable device exists. • If the hard drive is your boot device, ensure that the cables are connected and that the drive is installed properly and partitioned as a boot device. • Enter system setup and ensure that the boot sequence information is correct. No timer tick interrupt NOTICE - Hard Drive SELF MONITORING SYSTEM has reported that a parameter has exceeded its normal operating range. Dell recommends that you back up your data regularly. A parameter out of range may or may not indicate a potential hard drive problem A chip on the system board might be malfunctioning or motherboard failure. S.M.A.R.T error, possible hard disk drive failure. Recovering the operating system When your computer is unable to boot to the operating system even after repeated attempts, it automatically starts Dell SupportAssist OS Recovery. Dell SupportAssist OS Recovery is a standalone tool that is preinstalled in all Dell computers installed with Windows 10 operating system. It consists of tools to diagnose and troubleshoot issues that may occur before your computer boots to the operating system. It enables you to diagnose hardware issues, repair your computer, back up your files, or restore your computer to its factory state. You can also download it from the Dell Support website to troubleshoot and fix your computer when it fails to boot into their primary operating system due to software or hardware failures. For more information about the Dell SupportAssist OS Recovery, see Dell SupportAssist OS Recovery User's Guide at www.dell.com/ support. Flashing BIOS (USB key) Steps 1. Follow the procedure from step 1 to step 7 in "Flashing the BIOS" to download the latest BIOS setup program file. 2. Create a bootable USB drive. For more information see the knowledge base article SLN143196 at www.dell.com/support. 3. Copy the BIOS setup program file to the bootable USB drive. 4. Connect the bootable USB drive to the computer that needs the BIOS update. 5. Restart the computer and press F12 when the Dell logo is displayed on the screen. 6. Boot to the USB drive from the One Time Boot Menu. 7. Type the BIOS setup program filename and press Enter. 8. The BIOS Update Utility appears. Follow the instructions on the screen to complete the BIOS update. Flashing the BIOS About this task You may need to flash (update) the BIOS when an update is available or when you replace the system board. Follow these steps to flash the BIOS: Troubleshooting 77

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Table 20. System error messages(continued)
System message
Description
Keyboard failure
Keyboard failure or loose cable. If reseating the cable does not
solve the problem, replace the keyboard.
No boot device available
No bootable partition on hard disk drive, the hard disk drive cable is
loose, or no bootable device exists.
•
If the hard drive is your boot device, ensure that the cables are
connected and that the drive is installed properly and
partitioned as a boot device.
•
Enter system setup and ensure that the boot sequence
information is correct.
No timer tick interrupt
A chip on the system board might be malfunctioning or
motherboard failure.
NOTICE - Hard Drive SELF MONITORING SYSTEM has
reported that a parameter has exceeded its
normal operating range. Dell recommends that
you back up your data regularly. A parameter
out of range may or may not indicate a
potential hard drive problem
S.M.A.R.T error, possible hard disk drive failure.
Recovering the operating system
When your computer is unable to boot to the operating system even after repeated attempts, it automatically starts Dell SupportAssist OS
Recovery.
Dell SupportAssist OS Recovery is a standalone tool that is preinstalled in all Dell computers installed with Windows 10 operating system. It
consists of tools to diagnose and troubleshoot issues that may occur before your computer boots to the operating system. It enables you
to diagnose hardware issues, repair your computer, back up your files, or restore your computer to its factory state.
You can also download it from the Dell Support website to troubleshoot and fix your computer when it fails to boot into their primary
operating system due to software or hardware failures.
For more information about the Dell SupportAssist OS Recovery, see
Dell SupportAssist OS Recovery User's Guide
at
www.dell.com/
support
.
Flashing BIOS (USB key)
Steps
1.
Follow the procedure from step 1 to step 7 in "
Flashing the BIOS
" to download the latest BIOS setup program file.
2.
Create a bootable USB drive. For more information see the knowledge base article
SLN143196
at
www.dell.com/support
.
3.
Copy the BIOS setup program file to the bootable USB drive.
4.
Connect the bootable USB drive to the computer that needs the BIOS update.
5.
Restart the computer and press
F12
when the Dell logo is displayed on the screen.
6.
Boot to the USB drive from the
One Time Boot Menu
.
7.
Type the BIOS setup program filename and press
Enter
.
8.
The
BIOS Update Utility
appears. Follow the instructions on the screen to complete the BIOS update.
Flashing the BIOS
About this task
You may need to flash (update) the BIOS when an update is available or when you replace the system board.
Follow these steps to flash the BIOS:
Troubleshooting
77